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There is one other trick you can try, which is to try and force a sunroof position recalibration... start the truck, and hold the "close" button for at least 20 seconds. Do it for 40 to be sure. This might kick-start it into working again. Long shot, but you never know.

Hey Doc, I know you wrote this almost four years ago but, this just saved me a ton of heartache. I had my headliner halfway out, cussing, pricing new sunroof motors and low and behold - your trick worked. Thank you, thank you, thank you.

I just wanted to send a huge thank you to Doc for his tips, I tried the hold the close button with the engine running suggestion and it absolutely worked. You saved me time, money and a ton of hassle. Thanks again!

Genius!!!!

Originally Posted by navydevildoc

Bummer. It's actually a real simple system. The power goes from fuse 20 to the controller... it takes control cues from the switch and LIN bus, and operates the motor.

If you try and operate it without the engine running but with the interior lights on, do the lights dim slightly when you press the buttons? That might indicate that it's trying to move and is jammed in some way, as the motor is drawing power that's dimming the lights.

Other than that, you are going to need a Faultmate or T4/IDS to scan the LIN network for fault information.

There is one other trick you can try, which is to try and force a sunroof position recalibration... start the truck, and hold the "close" button for at least 20 seconds. Do it for 40 to be sure. This might kick-start it into working again. Long shot, but you never know.

OMG recalibration worked for me too!! I had accidentally tried to open it with ice covering it and it stopped working after that. Thank you thank you!!

AMAZING!!! My sunroof was stuck for a few days and I had no idea why. Scheduled appt. to take it to Land Rover this weekend till i came across this form. Held down the close button with the engine running and tt worked exactly at the 20th second! =D

This was for a 2010 RR sport supercharged...

Originally Posted by Txrova

Doc...
you genius!!!! I shut off the vehicle, checked if the interior lights dimmed when I tried to open/close, no change in bright-dim of the lights..

and as a last ditch effort, held the sunroof in a closed position after I started the vehicle back up.. and sure enough, it worked!!!!

:lmao

Thanks so much, I really am stretched for time during the week with work and it's hard for me to get into the dealership. Wow.. still amazed that friggin' worked!

Calibration procedure worked for my 05 LR3 that has been driving me crazy for the last few week. Like others, I would have dug into a fault diagnosis rabbit hole only to have wasted countless hours. My issue also started with a tad bit of ice that had not quite melted off before I hit the button.